Abstract
Vase life of cut lily flowers is limited by fading of petal color before abscission. As petal color changes continuously, it is difficult to determine when vase life ends. We investigated the relationship between declines in ornamental value (visible flower senescence) as judged by human subjects and petal color throughout vase life using cut flowers of the yellow lily. We also examined petal dry weight and thickness to clarify the temporal relationship between visible flower senescence and physiological petal senescence. Our results showed that visible flower senescence was sensitive to changes in petal saturation, which was reflected by the chroma value. The chroma value started to decrease in association with a decline in total carotenoids from day 4 after anther dehiscence. Visible flower senescence was marked on the sixth day when the lilies lost their ornamental value rapidly and their vase life came to an end. On the other hand, signs of physiological petal senescence were evident from the first day when petal dry weight and thickness started to decrease gradually. The progress of physiological petal senescence was reflected in the change in hue angle, which represents the color phase. Our results suggest that changes in the chroma value of yellow lily petals reflect visible flower senescence, which affects vase life. The onset of visible flower senescence is delayed by 3 days relative to physiological petal senescence due to maintenance of adequate carotenoid contents in petals during the early stage of flowering.
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Claims 8
Claim · model-written summary
Visible flower senescence was sensitive to petal saturation changes reflected by chroma.
LiliumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“visible flower senescence was sensitive to changes in petal saturation, which was reflected by the chroma value”
t0“Cut Lilies”
Claim · model-written summary
Chroma decreased with total carotenoids from day 4 after anther dehiscence.
- Compound
- total carotenoidse0
- Outcome
- chroma valuee0
- Direction
- decreasee0
- Qualifier
- from day 4 after anther dehiscencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chroma value started to decrease in association with a decline in total carotenoids from day 4 after anther dehiscence”
t0“Cut Lilies”
Claim · model-written summary
Visible flower senescence became marked on day six as ornamental value and vase life ended.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visible flower senescence was marked on the sixth day when the lilies lost their ornamental value rapidly and their vase life came to an end”
Claim · model-written summary
Petal dry weight decreased gradually from the first day.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from the first day when petal dry weight and thickness started to decrease gradually”
t0“Cut Lilies”
Claim · model-written summary
Petal thickness decreased gradually from the first day.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from the first day when petal dry weight and thickness started to decrease gradually”
t0“Cut Lilies”
Claim · model-written summary
Change in hue angle reflected physiological petal senescence.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The progress of physiological petal senescence was reflected in the change in hue angle”
t0“Cut Lilies”
Claim · model-written summary
Visible flower senescence began three days after physiological petal senescence.
- Outcome
- onset of visible flower senescencee0
- Direction
- delayede0
- Value
- 3 dayse0
- Comparator
- physiological petal senescencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The onset of visible flower senescence is delayed by 3 days relative to physiological petal senescence”
t0“Cut Lilies”
Claim · model-written summary
Adequate petal carotenoids during early flowering were proposed to delay visible senescence.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“due to maintenance of adequate carotenoid contents in petals during the early stage of flowering”
t0“Cut Lilies”
e1“The onset of visible flower senescence is delayed by 3 days relative to physiological petal senescence”